Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2024 1 8.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-21) NOAA-21 Lat/Lon Date Time(LANDSAT-8) LANDSAT-8 Lat/Lon    Distance(km)  Time Diff(sec)
 01/08/2024   07:09:35   ( -70.75,-112.51) 01/08/2024   07:10:43  ( -70.61,-110.52)   74.64                68
 01/08/2024   08:00:05   (  69.90,  56.15) 01/08/2024   08:00:21  (  69.90,  56.10)    2.17                16
 01/08/2024   08:50:47   ( -69.82,-136.41) 01/08/2024   08:49:51  ( -69.80,-136.42)    2.20                56
 01/10/2024   23:26:15   ( -70.02,   4.44) 01/10/2024   23:27:24  ( -70.03,   4.50)    2.86                69
 01/11/2024   00:16:59   (  69.90, 171.93) 01/11/2024   00:16:52  (  69.87, 171.92)    3.30                 7
 01/11/2024   01:07:37   ( -69.60, -20.32) 01/11/2024   01:06:24  ( -69.65, -20.74)   17.26                73
 01/13/2024   15:43:08   ( -69.97, 120.29) 01/13/2024   15:43:55  ( -69.97, 120.30)    0.36                47
 01/13/2024   16:33:52   (  69.85, -72.23) 01/13/2024   16:33:22  (  69.86, -72.21)    1.10                30
 01/16/2024   07:09:34   (  70.86,  67.34) 01/16/2024   07:10:41  (  70.76,  69.69)   86.74                67
 01/16/2024   08:00:00   ( -69.93,-123.87) 01/16/2024   08:00:24  ( -69.94,-123.87)    1.45                24
 01/16/2024   08:50:44   (  69.81,  43.61) 01/16/2024   08:49:51  (  69.83,  43.62)    1.87                53
 01/18/2024   23:26:12   (  70.04,-175.58) 01/18/2024   23:27:23  (  70.05,-175.48)    3.90                71
 01/19/2024   00:16:53   ( -69.90,  -8.04) 01/19/2024   00:16:54  ( -69.89,  -8.06)    0.91                 1
 01/19/2024   01:07:35   (  69.68, 159.59) 01/19/2024   01:06:22  (  69.72, 159.35)   10.64                73
 01/21/2024   15:43:04   (  69.96, -59.68) 01/21/2024   15:43:53  (  69.97, -59.71)    1.19                49
 01/21/2024   16:33:46   ( -69.87, 107.77) 01/21/2024   16:33:23  ( -69.87, 107.79)    0.61                23